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Goodwill and Intangible Assets (Goodwill and Acquired Intangible Assets) (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Jul. 02, 2016 | Sep. 30, 2015
Goodwill (not amortized), Net Book Value |  | $ 1,169,660 | $ 1,069,041
Intangible assets with finite lives (amortized), Gross Carrying Amount | [1] | 754,116 | 679,552
Intangible assets with finite lives (amortized), Accumulated Amortization | [1] | 430,734 | 388,251
Intangible assets with finite lives (amortized), Net Book Value | [1] | 323,382 | 291,301
Intangible Assets, Net (Including Goodwill) |  | 1,493,042 | 1,360,342
Purchased Software |  |  |
Intangible assets with finite lives (amortized), Gross Carrying Amount |  | 352,782 | 284,257
Intangible assets with finite lives (amortized), Accumulated Amortization |  | 192,509 | 174,887
Intangible assets with finite lives (amortized), Net Book Value | [1] | $ 160,273 | 109,370
Acquired finite-lived intangible asset, weighted average useful life |  | 7 years |
Capitalized Software |  |  |
Intangible assets with finite lives (amortized), Gross Carrying Amount |  | $ 22,877 | 22,877
Intangible assets with finite lives (amortized), Accumulated Amortization |  | 22,877 | 22,877
Intangible assets with finite lives (amortized), Net Book Value | [1] | 0 | 0
Customer Lists and Relationships |  |  |
Intangible assets with finite lives (amortized), Gross Carrying Amount |  | 355,504 | 349,938
Intangible assets with finite lives (amortized), Accumulated Amortization |  | 198,335 | 174,017
Intangible assets with finite lives (amortized), Net Book Value | [1] | $ 157,169 | 175,921
Acquired finite-lived intangible asset, weighted average useful life |  | 10 years |
Trademarks and Trade Names |  |  |
Intangible assets with finite lives (amortized), Gross Carrying Amount |  | $ 19,012 | 18,534
Intangible assets with finite lives (amortized), Accumulated Amortization |  | 13,151 | 12,759
Intangible assets with finite lives (amortized), Net Book Value | [1] | $ 5,861 | 5,775
Acquired finite-lived intangible asset, weighted average useful life |  | 9 years |
Other |  |  |
Intangible assets with finite lives (amortized), Gross Carrying Amount |  | $ 3,941 | 3,946
Intangible assets with finite lives (amortized), Accumulated Amortization |  | 3,862 | 3,711
Intangible assets with finite lives (amortized), Net Book Value | [1] | $ 79 | $ 235
Acquired finite-lived intangible asset, weighted average useful life |  | 3 years |
[1] | The weighted average useful lives of purchased software, customer lists and relationships, trademarks and trade names and other intangible assets with a remaining net book value are 7 years, 10 years, 9 years, and 3 years, respectively.

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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